EP 1050969 A3 20030521 - System and method for logarithmic digital to analog conversion
Title (en)
System and method for logarithmic digital to analog conversion
Title (de)
System und Verfahren zur logarithmischen Digital-Analog-Wandlung
Title (fr)
Système et procédé de conversion numérique-analogique logarithmique
Publication
Application
Priority
US 30688699 A 19990507
Abstract (en)
[origin: EP1050969A2] The present invention relates to digital to analog conversion. According to an embodiment of the present invention, a logarithmic transfer characteristic (400) may be produced by subtracting a fraction of the output current to a reference current in a recursive equation (504). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H03M 1/664 (2013.01 - EP US); H03M 1/745 (2013.01 - EP US)
Citation (search report)
- [X] EP 0780986 A2 19970625 - THOMSON MULTIMEDIA SA [FR]
- [A] US 5703582 A 19971230 - KOYAMA SEIJI [JP], et al
- [A] EP 0464777 A1 19920108 - ZUMTOBEL AG [AT]
- [A] EP 0155046 A1 19850918 - TRT TELECOM RADIO ELECTR [FR], et al
- [X] BAGG C G: "LINEAR DAC HAS NONLINEAR OUTPUT", ELECTRONIC DESIGN, PENTON PUBLISHING, CLEVELAND, OH, US, vol. 43, no. 8, 17 April 1995 (1995-04-17), pages 114,116, XP000507018, ISSN: 0013-4872
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1050969 A2 20001108; EP 1050969 A3 20030521; EP 1050969 B1 20071017; DE 60036748 D1 20071129; DE 60036748 T2 20080724; SG 86390 A1 20020219; US 6208278 B1 20010327
DOCDB simple family (application)
EP 00106895 A 20000331; DE 60036748 T 20000331; SG 200002195 A 20000418; US 30688699 A 19990507